Australia will help fund a World War I museum in Belgium that houses artefacts from a battlefield where more than 11,000 diggers died.
Memorial Museum Passchendaele 1917 in Zonnebeke is being expanded to recognise the nations that took part in the critical eight-week battle.
The Australian Army suffered about 38,000 casualties including 11,00 killed in action or died of wounds.
"To this day, that period remains Australia's most costly experience of war," Veterans Affairs Minister Warren Snowdon said at Passchendaele.
The government will provide the museum with A$270,000 ($339,820) in funding.